Microstructural, mechanical, and thermal-insulation properties of poly(methyl methacrylate)/silica aerogel bimodal cellular foams

2016 ◽  
Vol 134 (6) ◽  
Author(s):  
Guoqiang Luo ◽  
Xiaoli Gu ◽  
Jian Zhang ◽  
Ruizhi Zhang ◽  
Qiang Shen ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Thermal Insulation ◽  
Silica Aerogel ◽  
Poly Methyl Methacrylate ◽  
Cellular Foams

scholarly journals Synthesis and study of new functionalized silica aerogel poly(methyl methacrylate) composites for biomedical use

2014 ◽  
Vol 36 (2) ◽  
pp. 348-358 ◽  
Author(s):  
István Lázár ◽  
Helga Fruzsina Bereczki ◽  
Sándor Manó ◽  
Lajos Daróczi ◽  
György Deák ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Silica Aerogel ◽  
Functionalized Silica ◽  
Poly Methyl Methacrylate

scholarly journals Thermal insulation of silica aerogel/PMMA composites with amino-capped polydivinylsiloxane phase interfaces

2018 ◽  
Vol 25 (6) ◽  
pp. 1107-1114
Author(s):  
Hongyan Li ◽  
Limeng Song ◽  
Cong Sun ◽  
Ruyi Li ◽  
Yongqiang Fu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Methyl Methacrylate ◽  
Thermal Insulation ◽  
Silica Aerogel ◽  
Testing Machine ◽  
Phase Interface ◽  
Gel Permeation Chromatography ◽  
Mesoporous Structure ◽  
Insulation Material ◽  
Microcomputer Control

AbstractContradictions of strength and thermal insulation of silica aerogel (SA) are of wide concern. In this research, the mesoporous structure of SA was grafted with the polymers to increase the strength of SA and decrease the thermal conductivity of composites. The composites were characterized and analyzed using field emission scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, the thermal gravimetric analyzer (TGA), multi-assay gel permeation chromatography (GPC), a microcomputer control electronic universal testing machine and so on. The results indicated that amino-capped polydivinylsiloxane (AP) was successfully grafted on the SA surface and polymerized with methyl methacrylate (MMA) to form an AP high thermal insulation phase interface between the SA phase and poly(methyl methacrylate) (PMMA) phase. The SA-AP/PMMA composite with a covalent bonding high thermal insulation phase interface had better mechanical properties and compressive strength than those of SA/PMMA. The obtained composite was an excellent thermal insulation material with lower thermal conductivity [0.045 W/(m·K)].

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